Canadian dinosaur closely related to mammals
The fossil, previously known at Bathygnathus borealis, was collected in 1845, and was named Bathygnathus borealis by palaeontologist Joseph Leidy.
Nov 26, 2015, 15:18 PM IST
The fossil, previously known at Bathygnathus borealis, was collected in 1845, and was named Bathygnathus borealis by palaeontologist Joseph Leidy.
Nov 26, 2015, 15:18 PM IST